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\usepackage{newtxtext}%\usepackage{palatino}
\usepackage{lipsum}

\title{fungi}
\begin{document}
  \begin{abstract}
    Fungi are an important part of the carbon cycle of the ecological environment, and the process of decomposing organic matter into inorganic matter is affected by the competition of the environment and fungal populations, so in this paper :
    \begin{itemize}
    	\item By analyzing the relationship between the hyphal elongation rate, moisture niche width and moisture tolerance of filamentous fungi and its decomposition rate, the organic matter decomposition model of single bacteria is established; 
    	\item By analyzing the interspecific competitiveness index, combined with the population growth model, the multi-bacterial organic matter decomposition model is established;
    	\item By coordinating the adaptability and incomplete plasticity of fungi to the environment, the influence of fungal decomposition rate in different environments was discussed, and the relationship curve between the decomposition rate of monobacterial species and ambient temperature and humidity was formed by fitting.
    	
    \end{itemize}

    First of all, this paper collected the data in the literature and obtained the fungal sample of XXX after XX processing of the sample to test its reliability. Furthermore, according to the characteristics of humidity resistance and mycelium elongation obtained from the treatment, an abstract method was adopted to abstract them into X class, / X class was selected/all classes were inserted, and regression analysis was conducted to obtain the decomposition model of bacteria

    Then, the single population growth model is established based on the differential equation, and the environmental factors are introduced. On this basis, the multi-species competition model is established. Based on these models, the simulation is carried out in this paper, and it is found that XXX

    \begin{keywords}
      fungi, biodiversity, hierarchical clustering, differential equation
    \end{keywords}
  \end{abstract}

  \maketitle
  \tableofcontents % 目录
  \newpage
  \bibliographystyle{unsrt}
  
  \section{Introduction}
    \subsection{Background}
      Fungi are a key driver of carbon cycling in terrestrial ecosystems\cite{mcguire2010microbial,cavicchioli2019scientists}, controlling the decomposition of organic matter\cite{baldrian2017forest}and contributing even as much to wood decay as climate\cite{bradford2014climate}. Microbial processes are therefore incorporated into biogeochemical models of the global carbon cycle in order to obtain more accurate predictions of climate change. Previously, the model ignores the microbial communities between individuals of different\cite{crowther2019global}, the use of biomass as the characteristics of the decomposition rate of model\cite{mcguire2010microbial,manzoni2009soil}, however, people gradually realize that different species of fungi decomposition rate difference is very big \cite{mcguire2010microbial,dickie2012assembly}, therefore know how to change with different community composition and decomposition rate, for the more precisely predict carbon dynamics, To build contemporary fall decomposability biogeochemical model has important significance \cite{wieder2015representing,allison2017consequences}, but a recent paper studied the different features of various fungi, is one of the most important features of elongation and moisture resistant, and gives the decomposition rate of different fungi, on the basis we will feature modeling and decomposition of the study, at the same time according to their research, We decided to use mycelium elongation to describe the growth rate.
      	\begin{figure}[h]
	      	\small
	      	\centering
	      	\includegraphics[width=8cm]{../figures/moisture.png}
	      	\caption{Role of fungi in the carbon cycle} \label{fig:carbon}
    	\end{figure}

    \subsection{Restatement of the Problem}
      Based on the above background information, the main tasks of this paper are as follows:
      \begin{enumerate}
      	\item[Task 1:] Establish mathematical models of decomposition of leaves and lignofibers by various fungi, including interactions between different types of fungi with different growth rates and moisture tolerance.
      	\item[Task 2:] Analysis of interactions between different types of fungi including short-term and long-term trends. At the same time, sensitivity analysis of rapid environmental fluctuations was performed, and the overall impact of changes in atmospheric trends was determined to evaluate the impact of changes in local weather patterns on the model.
      	\item[Task 3:] Predict the relative strengths and weaknesses of each species and combinations of species likely to continue, and conduct analyses in arid, semi-arid, temperate, arboreal and tropical rainforests
      	\item[Task 4:] Analyze how the diversity of the fungal community in the system affects the overall efficiency of litter decomposition. And assess the importance and role of biodiversity in the context of varying degrees of change in the local environment.
      \end{enumerate}

    \subsection{Our Work and Model Overview}
     Based on the paper provided, we obtained relevant data including elongation, decomposition rate and other data, and processed the obtained humidity tolerance, and established a \textbf{multivariate linear regression model} of elongation and moisture tolerance on decomposition rate, established a \textbf{species reproductive competition model} based on elongation as the growth rate, and introduced \textbf{environmental factors} through data such as moisture niche width and humidity ecological width, on this basis, the impact of environmental fluctuations on the model was explored, and the weather (mainly temperature and humidity) data of the data source area were obtained , which was simulated. In addition, the humidity and temperature characteristics of arid, semi-arid, temperate, arboreal and tropical rainforests were extracted, and the comparative advantages and disadvantages of each combination and the potentially persistent species combination were analyzed, and the impact of species diversity was analyzed on this basis, and the impact on the stable environment was added, and the conclusion was that biodiversity was important.
     	\begin{figure}[h]
	     	\small
	     	\centering
	     	\includegraphics[width=8cm]{../figures/moisture.png}
	     	\caption{mindMap of O	ur Work} \label{fig:carbon}
	     \end{figure}
     

  \section{Assumptions and Justifications}
	  \begin{enumerate}
	  	\item[a] Suppose dead wood and ground debris are all made of organic matter and stacked at a vertical distance.\\
	  		For this question, the available parts of dead wood and ground garbage are mainly lignin, cellulose and hemicellulose, which are easily decomposed by filamentous fungi, so the prediction error can be reduced by excluding inorganic substances or organic matter that other fungi do not decompose; this is an ideal fungal living environment.
	  		
	  	\item[b] Suppose the fungus extends along the surface of the organic matter and decomposes downwards.
	  		
	  		Fungi break down organic matter by extracellular enzymes, so that only the surface in contact with organic matter has a decomposition effect; while fungi grow to a certain size, they divide into two or more smaller strains, so they extend on the surface of organic matter.	
	  	\item[c] Suppose fungal activity does not affect ambient temperature and humidity levels.
	  	
	  		Because the temperature and humidity of the environment affect the rate of decomposition and extension of fungi, and the decomposition of organic matter by fungal activity produces carbon dioxide and water, and emits heat, which will make the model more complex and difficult to describe; therefore, this article will ignore the impact of water and heat generated by fungal activity on the environment.
	  	\item[d] Suppose environmental fluctuations are only reflected in changes in temperature and humidity.
	  		Fungi act as decomposers in the ecological cycle, it neither photosynthesis nor hunting, predation and other activities, long-term resident in the soil or humus, so the influence of the environment on it depends only on changes in temperature and humidity.
	  	\item[e] Suppose the interaction between fungal species is mainly reflected in population competition.
	  	
	  		Relationships between species can be competitive and interdependent and predatory. But different kinds of fungi belong to the same organism, and the interdependencies between them are not obvious. Therefore, we only consider their competition to express the interactive relationship.
	  	\item[f] Suppose moisture tolerance is constant in the same fungal community, and the proportion of fungal composition in it is linearly proportional.
	  \end{enumerate}
    
  \section{Abbreviation and Definitions}

  \section{Data Description}
  	\subsection{Data Acquisition and Pre-processing}
  	\subsection{Data Visualization and Validity Examination}
  	\subsection{Clustering Analysis}

  \section{Validating the Model}

  \section{Conclusions}

  \section{A Summary}

  \section{Evaluate of the Mode}

  \section{Strengths and weaknesses}

    \subsection{Strengths}
    
  \bibliography{references}

  \begin{appendices}
    \section{First appendix}
    \section{Second appendix}
  \end{appendices}

\end{document}

